US20230413605A1 - Display panel and display apparatus - Google Patents

Display panel and display apparatus Download PDF

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Publication number
US20230413605A1
US20230413605A1 US18/458,592 US202318458592A US2023413605A1 US 20230413605 A1 US20230413605 A1 US 20230413605A1 US 202318458592 A US202318458592 A US 202318458592A US 2023413605 A1 US2023413605 A1 US 2023413605A1
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pixel
sub
driving
display panel
display area
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Junhui Lou
Chao Chi Peng
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Assigned to KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD reassignment KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LOU, Junhui, PENG, Chao Chi
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/88—Dummy elements, i.e. elements having non-functional features
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors

Definitions

  • the present application relates to the field of display, and particularly to a display panel and a display apparatus.
  • Electronic devices such as a cell phone and a tablet computer need to integrate a front camera, a telephone receiver, an infrared sensing component and the like.
  • a notch or a hole can be formed in the display screen so that external light can enter the photosensitive component under the screen through the notch or the hole.
  • these electronic devices do not achieve a real full-screen display, and cannot display an image in all areas of the entire screen. For example, the area corresponding to the front camera of these electronic devices cannot display the image.
  • Embodiments of the present application provide a display panel and a display apparatus, at least part of the display panel can be light-transmitting and can be used for display, which is beneficial for the under-screen integration of the photosensitive components.
  • Embodiments of a first aspect of the present application provides a display panel including a first display area and a second display area, a light transmittance of the first display area being greater than a light transmittance of the second display area, the display panel including: sub-pixels including first sub-pixels located in the first display area and second sub-pixels located in the second display area; pixel driving circuits located in the second display area and including first driving units and second driving units, each of the first driving units including one or more first pixel driving circuits configured to drive the first sub-pixels and N second pixel driving circuits configured to drive the second sub-pixels, each of the second driving units including one or more virtual areas and N second pixel driving circuits configured to drive the second sub-pixels, an arrangement of the N second pixel driving circuits in the first driving unit being the same as an arrangement of the N second pixel driving circuits in the second driving unit, and N being a positive integer greater than or equal to 2.
  • Embodiments of a second aspect of the present application provide a display apparatus including the display panel according to the embodiments of the first aspect.
  • the light transmittance of the first display area is greater than the light transmittance of the second display area, so that the photosensitive components can be integrated at the back of the first display area of the display panel to realize under-screen integration for the photosensitive components such as cameras, while the first display area can display images, the display area of the display panel is increased, and a full-screen design is achieved for the display apparatus.
  • the display panel includes the first pixel driving circuits, the second pixel driving circuits and the virtual areas located in the second display area.
  • the first pixel driving circuits are configured to drive the first sub-pixels located in the first display area, and thus the pixel driving circuits for driving the sub-pixels in the first display area are located in the second display area, the light transmittance of the first display area can be further increased.
  • the virtual areas are arranged in the second display area, so that the arrangement of the N second pixel driving circuits in the first driving unit is the same as the arrangement of the N second pixel driving circuits in the second driving unit, the display consistency of the second display area can be guaranteed, and the display effect of the display panel can be improved.
  • FIG. 1 shows a schematic structural diagram of a display panel according to the embodiments of the first aspect of the present application
  • FIG. 2 shows a partial enlarged view of an example of area Q in FIG. 1 ;
  • FIG. 3 shows a partial enlarged view of another example of area Q in FIG. 1 ;
  • FIG. 4 shows a partial enlarged view of yet another example of area Q in FIG. 1 ;
  • FIG. 5 shows a partial enlarged view of yet another example of area Q in FIG. 1 ;
  • FIG. 6 shows a cross-sectional view at B-B in FIG. 2 ;
  • FIG. 7 shows a schematic structural diagram of a display apparatus according to the embodiments of the second aspect of the present application.
  • FIG. 8 shows a cross-sectional view at D-D in FIG. 7 .
  • photosensitive components such as a front camera, an infrared light sensor, and a proximity light sensor need to be integrated at a side of a the display panel.
  • a light-transmitting display area may be arranged on the electronic device and the photosensitive components may be arranged at the back of the light-transmitting display area, so that a full-screen display can be achieved for the electronic device while ensuring that the photosensitive components operate normally.
  • the driving circuits for the light-transmitting area are often arranged in a non-light-transmitting area, which causes nonuniform display of the non-light-transmitting area of the display panel.
  • the embodiments of the present application provide a display panel, which may be an organic light emitting diode (OLED) display panel.
  • a display panel which may be an organic light emitting diode (OLED) display panel.
  • FIG. 1 shows a schematic structural diagram of a display panel according to the embodiments of the first aspect of the present application.
  • the display panel 100 includes a first display area AA 1 , a second display area AA 2 , and a non-display area NA surrounding the first display area AA 1 and the second display area AA 2 , and a light transmittance of the first display area AA 1 is greater than a light transmittance of the second display area AA 2 .
  • the light transmittance of the first display area AA 1 is greater than or equal to 15%.
  • the light transmittances of various functional film layers of the display panel 100 in the embodiment are all greater than 80%, or even the light transmittances of at least part of the functional film layers are greater than 90%.
  • the light transmittance of the first display area AA 1 is greater than the light transmittance of the second display area AA 2 , so that the photosensitive components can be integrated at the back of the first display area AA 1 of the display panel 100 to realize under-screen integration for the photosensitive components such as cameras, while the first display area AA 1 can display images, the display area of the display panel 100 is increased, and a full-screen design is achieved for the display apparatus.
  • the number of the first display area AA 1 and the number of the second display area AA 2 may be set in a variety of ways, for example, the number of the first display area AA 1 is one and the number of the second display area AA 2 is one, so as to achieve the under-screen integration for the photosensitive components or fingerprint recognition.
  • the number of the first display areas AA 1 is two, in which one of the first display areas AA 1 is used for the under-screen integration of the photosensitive components and the other one of the first display areas AA 1 is used for the fingerprint recognition.
  • the driving circuits for driving the first display area AA 1 will be placed in the second display area AA 2 .
  • the inventors have found that if the driving circuits for driving the first display area AA 1 are placed in the second display area AA 2 , the driving circuits originally for driving the sub-pixels in the second display area AA 2 will be arranged nonuniformly, which in turn affects the display uniformity of the second display area AA 2 .
  • FIG. 2 shows a partial enlarged schematic structural diagram of area Q in FIG. 1
  • FIG. 3 shows a partial enlarged schematic structural diagram of area Q in FIG. 1 in another embodiment.
  • FIG. 2 and FIG. 3 show different layer structures.
  • the display panel 100 includes sub-pixels and pixel driving circuits.
  • the sub-pixels include first sub-pixels 110 located in the first display area AA 1 and second sub-pixels 120 located in the second display area AA 2 .
  • the pixel driving circuits are located in the second display area AA 2 and include first driving units 200 a and second driving units 200 b , each of the first driving units 200 a includes one or more first pixel driving circuits 210 for driving the first sub-pixels 110 and N second pixel driving circuits 220 for driving the second sub-pixel 120 , each of the second driving units 200 b includes one or more virtual areas 230 and N second pixel driving circuits 220 for driving the second sub-pixels 120 , an arrangement of the N second pixel driving circuits 220 in the first driving unit 200 a is the same as an arrangement of the N second pixel driving circuits 220 in the second driving unit 200 b , and N is a positive integer greater than or equal to 2.
  • the arrangement of the pixel driving circuits is shown in FIG. 3 .
  • the display panel 100 includes the first pixel driving circuits 210 , the second pixel driving circuits 220 and the virtual areas 230 located in the second display area AA 2 .
  • the first pixel driving circuits 210 are configured to drive the first sub-pixels 110 located in the first display area AA 1 , and thus the pixel driving circuits for driving the sub-pixels in the first display area AA 1 are located in the second display area AA 2 , the light transmittance of the first display area AA 1 can be further increased.
  • the virtual areas 230 are further arranged in the second display area AA 2 , so that the arrangement of the N second pixel driving circuits 220 in the first driving unit 200 a is the same as the arrangement of the N second pixel driving circuits 220 in the second driving unit 200 b , the second pixel driving circuits 220 can be distributed more uniformly in the second display area AA 2 , the display consistency of the second display area AA 2 is guaranteed, and the display effect of the display panel 100 can be improved.
  • the arrangement of the N second pixel driving circuits 220 in the first driving unit 200 a is the same as the arrangement of the N second pixel driving circuits 220 in the second driving unit 200 b may mean that the relative positional relationship of the N second pixel driving circuits 220 in the first driving unit 200 a is the same as the relative positional relationship of the N second pixel driving circuits 220 in the second driving unit 200 b .
  • the N second pixel driving circuits 220 in the first driving unit 200 a are arranged sequentially along the first direction X
  • the N second pixel driving circuits 220 in the second driving unit 200 b are arranged sequentially along the first direction X.
  • the N second pixel driving circuits 220 in the first driving unit 200 a are arranged in two rows and four columns along the first direction X and the second direction Y, and four second pixel driving circuits 220 are arranged in one row
  • the N second pixel driving circuits 220 in the second driving unit 200 b are arranged in two rows and four columns along the first direction X and the second direction Y
  • four second pixel driving circuits 220 are arranged in one row.
  • the N second pixel driving circuits 220 in the first driving unit 200 a are arranged in one row and three columns along the first direction X and the second direction Y, and three second pixel driving circuits 220 are arranged in one row
  • the N second pixel driving circuits 220 in the second driving unit 200 b are arranged in one row and three columns along the first direction X and the second direction Y
  • three second pixel driving circuits 220 are arranged in one row.
  • the sub-pixels may be arranged in a variety of ways, and in some embodiments, the first sub-pixels 110 include red sub-pixels, green sub-pixels and blue sub-pixels to achieve the colorized display of the first display area AA 1 .
  • the second sub-pixels 120 include red sub-pixels, green sub-pixels and blue sub-pixels to achieve the colorized display of the second display area AA 2 .
  • the second pixel driving circuits 220 include second red driving circuits for driving red sub-pixels to display, second green driving circuits for driving green sub-pixels to display, and second blue driving circuits for driving blue sub-pixels to display.
  • the N second pixel driving circuits 220 in the first driving unit 200 a include the second red driving circuits, the second green driving circuits and the second blue driving circuits
  • the N second pixel driving circuits 220 in the second driving unit 200 b include the second red driving circuits, the second green driving circuits and the second blue driving circuits
  • the arrangement of the second red driving circuits, the second green driving circuits and the second blue driving circuits in the first driving unit 200 a is the same as the arrangement of the second red driving circuits, the second green driving circuits and the second blue driving circuits in the second driving unit 200 b , that is, the relative position of the second red driving circuits, the second green driving circuits and the second blue driving circuits in the first driving unit 200 a is the same as the relative position of the second red
  • the second red driving circuits, the second green driving circuits and the second blue driving circuits in the first driving unit 200 a are arranged sequentially in the first direction X
  • the second red driving circuits, the second green driving circuits and the second blue driving circuits in the second driving unit 200 b are arranged sequentially in the first direction X.
  • the arrangement of a plurality of first sub-pixels 110 is the same as the arrangement of a plurality of second sub-pixels 120 to reduce the display difference between the first display area AA 1 and the second display area AA 2 .
  • an area of the first sub-pixel 110 is less than an area of the second sub-pixel 120 to further increase the light transmittance of the first display area AA 1 .
  • a size of the first driving unit 200 a is the same as a size of the second driving unit 200 b to further improve the display uniformity of the second display area AA 2 .
  • a size of the first pixel driving circuit 210 is the same as a size of the virtual area 230
  • a size of the N second pixel driving circuits 220 in the first driving unit 200 a is the same as a size of the N second pixel driving circuits 220 in the second driving unit 200 b , so as to further improve the display uniformity of the second display area AA 2 .
  • a virtual circuit is arranged in the virtual area 230 .
  • the virtual circuit may be arranged in a variety of ways.
  • the virtual circuit may include one or more metal layers, and/or the virtual circuit may include at least one of a thin film transistor, a capacitor electrode plate, and a metal wiring.
  • a structure of the virtual circuit is the same as a structure of the first pixel driving circuit 210 , so that the display effect of the virtual area 230 is the same as the display effect of the area where the first pixel driving circuit 210 is located, which can further improve the display uniformity of the second display area AA 2 .
  • the first driving units 200 a and the second driving units 200 b are uniformly distributed in the second display area AA 2 , that is, a distance between two adjacent first driving units 200 a , a distance between two adjacent second driving units 200 b , and a distance between a first driving unit 200 a and a second driving unit 200 b that are adjacent are all equal, which can further improve the display uniformity of the second display area AA 2 .
  • the first pixel driving circuit 210 is located in the middle of the N second pixel driving circuits 220 in the first direction.
  • the first pixel driving circuit 210 is located in the middle of the N second pixel driving circuits 220 in the second direction.
  • the first pixel driving circuit 210 is located in the middle of the N second pixel driving circuits 220 in the first direction.
  • the first pixel driving circuits 210 are located among the N second pixel driving circuits 220 .
  • N is three and the three second pixel driving circuits 220 are arranged in the first direction
  • the first pixel driving circuit 210 is located among the three second pixel driving circuits 220
  • one second pixel driving circuit 220 is arranged at one side of the first pixel driving circuit 210
  • two second pixel driving circuits 220 are arranged at the other side of the first pixel driving circuit 210 .
  • the first pixel driving circuits 210 and the virtual areas 230 are uniformly distributed in the second display area AA 2 .
  • the m first pixel driving circuits 210 and the n virtual areas are uniformly distributed in the second display area AA 2 , that is, a distance between any two adjacent first pixel driving circuits 210 , a distance between any two adjacent virtual areas 230 , and a distance between a first pixel driving circuit 210 and a virtual area 230 that are adjacent are all equal.
  • the first pixel driving circuits 210 and the virtual areas 230 are uniformly distributed in the second display area AA 2 , which can guarantee the display uniformity of the second display area AA 2 .
  • a structure of the first driving unit 200 a is the same as a structure of the second driving unit 200 b , which further simplifies the layout and fabrication of the pixel driving circuits.
  • a size of the first driving unit 200 a is the same as a size of the second driving unit 200 b , which further guarantees the display uniformity of the second display area AA 2 .
  • a relative position of the first pixel driving circuits 210 and the N second pixel drive circuits 220 in the first driving unit 200 a is the same as a relative position of the virtual circuits 230 and the N second pixel driving circuits 220 in the second driving unit 200 b , which further simplifies the layout and fabrication of the pixel driving circuits.
  • N is three and the three second pixel driving circuits 220 are arranged sequentially along the first direction X
  • the first pixel driving circuit 210 in the first driving unit 200 a is located at one side of the three second pixel driving circuits 220 in the first direction X
  • the virtual area 230 in the second driving unit 200 b is also located at one side of the three second pixel driving circuits 220 in the first direction X
  • the first pixel driving circuit 210 and the virtual area 230 are located at a same side of the three second pixel driving circuits 220 .
  • the N second sub-pixels 120 driven by the N second pixel driving circuits 220 form a sub-pixel unit 100 a
  • a size of the first driving unit 200 a and/or the second driving unit 200 b fits a size of the sub-pixel unit 100 a
  • FIG. 2 and FIG. 3 show an embodiment in which the size of the first driving unit 200 a and/or the second driving unit 200 b fits the size of the sub-pixel unit 100 a
  • FIG. 4 and FIG. 5 show another embodiment in which the size of the first driving unit 200 a and/or the second driving unit 200 b fits the size of the sub-pixel unit 100 a.
  • the size of the first driving unit 200 a and/or the second driving unit 200 b may fit the size of the sub-pixel unit 100 a by changing the wiring, the wiring size, etc., so that the position of the second pixel driving circuits 220 further fits the position of the second sub-pixels 120 driven by the second pixel driving circuits 220 , the connection between the second pixel driving circuits 220 and the second sub-pixels 120 will not be affected by the arrangement of the first pixel driving circuit 210 or the virtual area 230 in the second display area AA 2 , and the normal display of the second display area AA 2 is guaranteed.
  • an orthographic projection of the first driving unit 200 a in a thickness direction at least partially overlaps an orthographic projection of the sub-pixel unit 100 a driven by the first driving unit 200 a in the thickness direction, so as to reduce a distance between the first driving unit 200 a and the sub-pixel unit 100 a driven by the first driving unit 200 a , reduce the length of the wiring, and improve the stability of signal transmission.
  • the thickness direction is perpendicular to a plane defined by the first direction X and the second direction Y.
  • an orthographic projection of the second driving unit 200 b in the thickness direction at least partially overlaps an orthographic projection of the sub-pixel unit 100 a driven by the second driving unit 200 b in the thickness direction, so as to reduce a distance between the second driving unit 200 b and the sub-pixel unit 100 a driven by the second driving unit 200 b , reduce the length of the wiring, and improve the stability of signal transmission.
  • a plurality of sub-pixel units 100 a are arranged along the first direction X and the second direction Y, and a size of the sub-pixel unit 100 a in the first direction X is equal to a size of the first driving unit 200 a in the first direction X. If the first driving units 200 a are arranged according to the arrangement of the sub-pixels, the misalignment between the first driving units 200 a and the sub-pixel units 100 a in the first direction X can be reduced, and the distance between the first driving unit 200 a and the sub-pixel unit 100 a driven by the first driving unit 200 a can be reduced.
  • the size of the sub-pixel unit 100 a in the first direction X is equal to a size of the second driving unit 200 b in the first direction X. If the second driving units 200 b are arranged according to the arrangement of the sub-pixels, the misalignment between the second driving units 200 b and the sub-pixel units 100 a in the first direction X can be reduced, and the distance between the second driving unit 200 b and the sub-pixel unit 100 a driven by the second driving unit 200 b can be reduced.
  • a size of the sub-pixel unit 100 a in the second direction Y is equal to a size of the first driving unit 200 a in the second direction Y. If the first driving units 200 a are arranged according to the arrangement of the sub-pixels, the misalignment between the first driving units 200 a and the sub-pixel units 100 a in the second direction Y can be reduced, and the distance between the first driving unit 200 a and the sub-pixel unit 100 a driven by the first driving unit 200 a can be reduced.
  • the size of the sub-pixel unit 100 a in the second direction Y is equal to a size of the second driving unit 200 b in the second direction Y. If the second driving units 200 b are arranged according to the arrangement of the sub-pixels, the misalignment between the second driving units 200 b and the sub-pixel units 100 a in the second direction Y can be reduced, and the distance between the second driving unit 200 b and the sub-pixel unit 100 a driven by the second driving unit 200 b can be reduced.
  • the size of the sub-pixel unit 100 a in the first direction X is an average size of the sub-pixel units 100 a in the first direction X
  • the size of the sub-pixel unit 100 a in the second direction Y is an average size of the sub-pixel units 100 a in the second direction Y.
  • the size of the sub-pixel unit 100 a in the first direction X may be Q/P.
  • the display panel includes K rows of sub-pixel units 100 a and a size of the display panel in the second direction Y is S, the size of the sub-pixel unit 100 a in the second direction Y is S/K.
  • the plurality of sub-pixels form a pixel arrangement structure including a plurality of repeating units arranged repeatedly, the sub-pixel unit 100 a includes M repeating units, and M is a positive integer.
  • the repeating units are repeatedly arranged to form the pixel arrangement structure, and if the sub-pixel unit 100 a includes M repeating units, the N second pixel driving circuits 220 drive the M repeating units, therefore the N second pixel driving circuits 220 can be arranged repeatedly to drive the second sub-pixels 120 located in the second display area AA 2 , and thus the first driving unit 200 a or the second driving unit 200 b including the N second pixel driving circuits 220 can be arranged repeatedly to drive the second sub-pixels 120 located in the second display area AA 2 , which can simplify the fabrication and wiring of the driving circuits.
  • M may be a positive integer such as 1, 2, 3, etc.
  • N 3
  • the first driving unit 200 a includes three second pixel driving circuits 220 and one first pixel driving circuit 210 and is configured to drive three second sub-pixels 120 to display
  • the second driving unit 200 b includes three second pixel driving circuits 220 and one virtual area 230 and is configured to drive three second sub-pixels 120 to display.
  • M is 2 and the repeating unit includes four sub-pixels, e.g., the repeating unit includes one red sub-pixel, one blue sub-pixel and two green sub-pixels, then N is 8.
  • the first driving unit 200 a includes eight second pixel driving circuits 220 and one first pixel driving circuit 210 and is configured to drive the eight second sub-pixels 120 of the two repeating units to display.
  • the second driving unit 200 b includes eight second pixel driving circuits 220 and one virtual area 230 and is configured to drive the eight second sub-pixels 120 of the two repeating units to display.
  • the plurality of sub-pixels form a plurality of display units for emitting white light
  • the sub-pixel unit 100 a includes M display units, and M is a positive integer.
  • the first driving unit 200 a and the second driving unit 200 b are respectively configured to drive the M display units to display and are arranged according to the display units, which can improve the effect of the first driving unit 200 a and the second driving unit 200 b on the display.
  • the plurality of sub-pixels are distributed in an array along the first direction X and the second direction Y, and the first pixel driving circuit 210 and the first sub-pixels 110 driven by the first pixel driving circuit 210 are arranged in a same row along the first direction X.
  • the first pixel driving circuit 210 is connected with the first sub-pixels 110 and drives the first sub-pixels 110 to display through signal lines, and if the first pixel driving circuit 210 and the first sub-pixels 110 driven by the first pixel driving circuit 210 are arranged in a same row, at least part of the signal lines can extend in the first direction X, so that the bending of the signal lines is reduced and the transmission stability of the signal lines is improved.
  • the signal lines include a first signal line and a second signal line
  • the first signal line is a scan signal line and extends in the first direction X, therefore the scan signal line needs not to be bent, so as to simplify the arrangement of the scan signal line.
  • the first signal line is configured to connect the first pixel driving circuits 210 for driving a plurality of first sub-pixels 110 arranged in the first direction X.
  • the second signal line is a data signal line and is bent to connect the first pixel driving circuits 210 for driving a plurality of first sub-pixels 110 arranged in the second direction Y.
  • the first pixel driving circuits 210 are located at a side of the virtual areas 230 close to the first display area AA 1 .
  • the first pixel driving circuits 210 are relatively close to the first sub-pixels 110 , which can reduce the extension distance of the signal lines and facilitate the arrangement of the signal lines.
  • the second display area AA 2 includes a main display area and a transition area, the transition area is located at a side of the main display area facing the first display area AA 1 , that is, the transition area is located between the main display area and the first display area AA 1 , and a distance between the transition area and the first display area AA 1 is less than a distance between the main display area and the first display area AA 1 .
  • the first pixel driving circuits 210 are located in the transition area, and the virtual areas 230 are located in the main display area, so that the distance between the first pixel driving circuits 210 and the first display area AA 1 is relatively small, and the wiring length between the first pixel driving circuits 210 and the first sub-pixels 110 can be reduced.
  • an average distance between the plurality of first pixel driving circuits 210 and the first display area AA 1 is less than an average distance between the plurality of virtual areas 230 and the first display area AA 1 .
  • a distance between a single first pixel driving circuit 210 and the first display area AA 1 refers to a minimum distance between a center of the single first pixel driving circuit 210 and a center of the first display area AA 1
  • the average distance between the plurality of first pixel driving circuits 210 and the first display area AA 1 is an average of the distances between the plurality of first pixel driving circuits 210 and the first display area AA 1 .
  • the average distance between the plurality of virtual areas 230 and the first display area AA 1 refers to an average of the distances between the plurality of virtual areas 230 and the first display area AA 1 .
  • the first pixel driving circuit 210 is closer to the first display area AA 1 , so that the first pixel driving circuit 210 is closer to the first sub-pixels 110 , the extension distance of the signal lines can be reduced to facilitate the arrangement of the signal lines.
  • the first display area AA 1 is arranged symmetrically with respect to a first symmetry axis M that extends in the second direction Y and passes through the center of the first display area AA 1 , the plurality of first pixel driving circuits 210 are distributed symmetrically with respect to the first symmetry axis M, and the first pixel driving circuit 210 and the first sub-pixels 110 driven by the first pixel driving circuit 210 are located at a same side of the first symmetry axis M, so as to further reduce the distance between the first pixel driving circuit 210 and the first sub-pixels 110 driven by the first pixel driving circuit 210 , which reduces the wiring distance.
  • the circuit structure of the first pixel driving circuit 210 is any of a 2T1C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit.
  • the “2T1C circuit” refers to the pixel driving circuit including two thin film transistors (T) and one capacitor (C), and the same applies to the “7T1C circuit”, “7T2C circuit”, “9T1C circuit” and the like.
  • the circuit structure of the second pixel driving circuit 220 is any of the 2T1C circuit, the 7T1C circuit, the 7T2C circuit, or the 9T1C circuit.
  • a size of the first sub-pixel 110 is less than a size of the second sub-pixel 120 of a same color, which can reduce the space occupied by the first sub-pixels 110 in the first display area AA 1 , so that an area of the non-light-emitting area in the first display area AA 1 is greater, which is beneficial for increasing the light transmittance of the first display area AA 1 .
  • the first sub-pixels 110 and the first pixel driving circuits 210 are arranged in a one-to-one correspondence. Each first sub-pixel 110 is driven by a corresponding first pixel driving circuit 210 , which improves the display effect of the display panel 100 .
  • two or more adjacent first sub-pixels 110 of a same color are connected with a same first pixel driving circuit 210 to facilitate the wiring of the display panel 100 .
  • FIG. 6 shows a cross-sectional view at B-B in FIG. 2 .
  • the display panel 100 further includes: a substrate 101 ; and a pixel definition layer 102 located at one side of the substrate 101 and including first pixel openings K 1 located in the first display area AA 1 ;
  • the first sub-pixel 110 includes a first light-emitting structure 111 , a first electrode 112 , and a second electrode 113 , the first light-emitting structure 111 is located in the first pixel opening K 1 , the first electrode 112 is located at a side of the first light-emitting structure 111 facing the substrate 101 , and the second electrode 113 is located at a side of the first light-emitting structure 111 away from the substrate 101 .
  • One of the first electrode 112 and the second electrode 113 is an anode, and the other is a cathode.
  • the substrate 101 may be made of light-transmitting materials such as glass or polyimide (PI).
  • the pixel definition layer 102 further includes second pixel openings K 2 located in the second display area AA 2 .
  • the second sub-pixel 120 includes a second light-emitting structure 121 , a third electrode 122 , and a fourth electrode 123 .
  • the second light-emitting structure 121 is located in the second pixel opening K 2
  • the third electrode 122 is located at a side of the second light-emitting structure 121 facing the substrate 101
  • the fourth electrode 123 is located at a side of the second light-emitting structure 121 away from the substrate 101 .
  • One of the third electrode 122 and the fourth electrode 123 is an anode, and the other is a cathode.
  • the first electrode 112 and the third electrode 122 are anodes
  • the second electrode 113 and the fourth electrode 123 are cathodes.
  • the first light-emitting structure 111 and the second light-emitting structure 121 may respectively include an OLED light-emitting layer, and according to design requirements, the first light-emitting structure 111 and the second light-emitting structure 121 may further respectively include at least one of a hole inject layer, a hole transport layer, an electron inject layer, or an electron transport layer.
  • the first electrode 112 is a light-transmitting electrode.
  • the first electrode 112 includes an indium tin oxide (ITO) layer or an indium zinc oxide layer.
  • the first electrode 112 is a reflective electrode including a first light-transmitting conductive layer, a reflective layer on the first light-transmitting conductive layer, and a second light-transmitting conductive layer on the reflective layer.
  • the first light-transmitting conductive layer and the second light-transmitting conductive layer may be ITO, indium zinc oxide, and the like, and the reflective layer may be a metal layer made of, for example, silver.
  • the third electrode 122 may be made of the same material as the first electrode 112 .
  • the second electrode 113 includes a magnesium-silver alloy layer.
  • the fourth electrode 123 may be made of the same material as the second electrode 113 . In some embodiments, the second electrode 113 and the fourth electrode 123 may be interconnected as a common electrode.
  • an orthographic projection of each first light-emitting structure 111 on the substrate 101 consists of one first graphic unit or two or more first graphic units jointed together, and the first graphic unit includes at least one selected from a group including a round shape, an oval shape, a dumb-bell shape, a gourd shape and a rectangle shape.
  • an orthographic projection of each first electrode 112 on the substrate 101 consists of one second graphic unit or two or more second graphic units jointed together, and the second graphic unit includes at least one selected from a group including a round shape, an oval shape, a dumb-bell shape, a gourd shape and a rectangle shape.
  • an orthographic projection of each second light-emitting structure 121 on the substrate 101 consists of one third graphic unit or two or more third graphic units jointed together, and the third graphic unit includes at least one selected from a group including a round shape, an oval shape, a dumb-bell shape, a gourd shape and a rectangle shape.
  • an orthographic projection of each third electrode 122 on the substrate 101 consists of one fourth graphic unit or two or more fourth graphic units jointed together, and the fourth graphic unit includes at least one selected from a group including a round shape, an oval shape, a dumb-bell shape, a gourd shape and a rectangle shape.
  • the display panel 100 may further include an encapsulation layer, and a polarizer and a cover plate located on the encapsulation layer.
  • the cover plate may be directly arranged on the encapsulation layer without the polarizer, or at least the cover plate may be directly arranged on the encapsulation layer in the first display area AA 1 without the polarizer, so as to prevent the polarizer from affecting the light collection amount of the photosensitive component correspondingly disposed under the first display area AA 1 .
  • the polarizer may also be arranged on the encapsulation layer in the first display area AA 1 .
  • FIG. 7 shows a schematic structural diagram of a display apparatus according to the embodiments of the present application
  • FIG. 8 shows a cross-sectional view at D-D in FIG. 7 .
  • the display apparatus may include the display panel 100 according to any of the implementations described above.
  • the display panel 100 may be the display panel 100 in one of the above-mentioned embodiments and includes the first display area AA 1 and the second display area AA 2 , and the light transmittance of the first display area AA 1 is greater than the light transmittance of the second display area AA 2 .
  • the display panel 100 includes a first surface S 1 and a second surface S 2 opposite to each other, and the first surface S 1 is the display surface.
  • the display apparatus further includes a photosensitive component 200 located at a side of the display panel 100 corresponding to the second surface S 2 , and the photosensitive component 200 corresponds to the position of the first display area AA 1 .
  • the photosensitive component 200 may be an image capturing component for capturing external image information.
  • the photosensitive component 200 is a complementary metal oxide semiconductor (CMOS) image capturing component.
  • the photosensitive component 200 may be other image capturing component such as a charge-coupled device (CCD) image capturing component.
  • the photosensitive component 200 may not be limited to an image capturing component, for example, in some embodiments, the photosensitive component 200 may be a light sensor such as an infrared sensor, a proximity sensor, an infrared lens, a flood sensing element, an ambient light sensor, and a dot matrix projector.
  • other components may be integrated at the side of the display panel 100 of the display apparatus corresponding to the second surface S 2 , such as a telephone receiver or a speaker.
  • the light transmittance of the first display area AA 1 is greater than the light transmittance of the second display area AA 2 , so that the photosensitive component 200 can be integrated at the back of the first display area AA 1 of the display panel 100 to realize under-screen integration for the photosensitive component 200 such as the image capturing component, while the first display area AA 1 can display images, the display area of the display panel 100 is increased, and a full-screen design is achieved for the display apparatus.

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CN202111517579.5A CN114242759B (zh) 2021-12-13 2021-12-13 显示面板及显示装置
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